The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting certain MediaTek chipsets. Device OEMs have been notified of all the issues and the corresponding security patches for at least two months before publication. We take the security of our chipsets and our customers' products very seriously. At this time, we are not aware of any active exploitation of these vulnerabilities in the wild.
The severity of the identified vulnerabilities was conducted based on the Common Vulnerability Scoring System version 3.1 (CVSS v3.1).
The severity of the identified vulnerabilities was conducted based on the Common Vulnerability Scoring System version 3.1 (CVSS v3.1).
Summary
Details
| CVE | CVE-2025-20795 |
|---|---|
| Title | Out-of-bounds write in KeyInstall |
| Severity | High |
| CWE | CWE-787 Out-of-bounds Write |
| Description | There is a possible out of bounds write due to a missing bounds check. |
| Affected Chipsets | MT2718, MT6580, MT6739, MT6761, MT6765, MT6768, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6855, MT6873, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8195, MT8196, MT8370, MT8390, MT8391, MT8395, MT8676, MT8678, MT8696, MT8755, MT8766, MT8768, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20794 |
|---|---|
| Title | Stack overflow in Modem |
| Severity | High |
| CWE | CWE-121 Stack Overflow |
| Description | There is a possible system crash due to improper input validation. |
| Affected Chipsets | MT2735, MT2737, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6986, MT6989, MT6990, MT6991, MT6993, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20793 |
|---|---|
| Title | Null pointer dereference in Modem |
| Severity | High |
| CWE | CWE-476 NULL Pointer Dereference |
| Description | There is a possible system crash due to incorrect error handling. |
| Affected Chipsets | MT2735, MT2737, MT6813, MT6815, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6989, MT6990, MT6991, MT6993, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20762 |
|---|---|
| Title | Reachable assertion in Modem |
| Severity | High |
| CWE | CWE-617 Reachable Assertion |
| Description | There is a possible system crash due to incorrect error handling. |
| Affected Chipsets | MT6835, MT6835T, MT6878, MT6878M, MT6897, MT6899, MT6991, MT8676, MT8678, MT8755, MT8792, MT8793, MT8863, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20761 |
|---|---|
| Title | Improper check for unusual or exceptional conditions in Modem |
| Severity | High |
| CWE | CWE-754 Improper Check for Unusual or Exceptional Conditions |
| Description | There is a possible system crash due to incorrect error handling. |
| Affected Chipsets | MT2735, MT2737, MT6833, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20760 |
|---|---|
| Title | Reachable assertion in Modem |
| Severity | High |
| CWE | CWE-617 Reachable Assertion |
| Description | There is a possible read of uninitialized heap data due to an uncaught exception. |
| Affected Chipsets | MT2735, MT2737, MT6833, MT6835, MT6853, MT6855, MT6873, MT6875, MT6877, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6897, MT6899, MT6980, MT6983, MT6985, MT6986, MT6989, MT6990, MT6991, MT6993, MT8673, MT8675, MT8676, MT8678, MT8755, MT8771, MT8791, MT8791T, MT8792, MT8793, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20796 |
|---|---|
| Title | Specified index, position, or offset in imgsys |
| Severity | Medium |
| CWE | CWE-1285 Specified Index, Position, or Offset |
| Description | There is a possible out of bounds write due to improper input validation. |
| Affected Chipsets | MT6989, MT8796, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20797 |
|---|---|
| Title | Stack overflow in battery |
| Severity | Medium |
| CWE | CWE-121 Stack Overflow |
| Description | There is a possible out of bounds write due to a missing bounds check. |
| Affected Chipsets | MT2718, MT6765, MT6768, MT6781, MT6833, MT6835, MT6853, MT6855, MT6877, MT6879, MT6893, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8367, MT8391, MT8676, MT8678, MT8696, MT8766, MT8768, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20798 |
|---|---|
| Title | Out-of-bounds write in battery |
| Severity | Medium |
| CWE | CWE-787 Out-of-bounds Write |
| Description | There is a possible out of bounds write due to a missing bounds check. |
| Affected Chipsets | MT2718, MT6765, MT6768, MT6781, MT6833, MT6835, MT6853, MT6855, MT6877, MT6879, MT6893, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8367, MT8391, MT8676, MT8678, MT8696, MT8766, MT8768, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893 |
| Report Source | External |
| CVE | CVE-2025-20799 |
|---|---|
| Title | Use after free in c2ps |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6899, MT6991, MT6993, MT8793 |
| Report Source | External |
| CVE | CVE-2025-20800 |
|---|---|
| Title | Out-of-bounds write in mminfra |
| Severity | Medium |
| CWE | CWE-787 Out-of-bounds Write |
| Description | There is a possible out of bounds write due to a missing bounds check. |
| Affected Chipsets | MT2718, MT6899, MT6989, MT6991, MT8678, MT8793 |
| Report Source | External |
| CVE | CVE-2025-20801 |
|---|---|
| Title | Double free in seninf |
| Severity | Medium |
| CWE | CWE-415 Double Free |
| Description | There is a possible memory corruption due to a race condition. |
| Affected Chipsets | MT6878, MT6897, MT6899, MT6985, MT6989, MT6991, MT6993, MT8792, MT8796, MT8798 |
| Report Source | External |
| CVE | CVE-2025-20802 |
|---|---|
| Title | Use after free in geniezone |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6991, MT8196, MT8367, MT8781, MT8786, MT8793 |
| Report Source | External |
| CVE | CVE-2025-20778 |
|---|---|
| Title | Out-of-bounds write in display |
| Severity | Medium |
| CWE | CWE-787 Out-of-bounds Write |
| Description | There is a possible out of bounds write due to a missing bounds check. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20779 |
|---|---|
| Title | Use after free in display |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible use after free due to a race condition. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20780 |
|---|---|
| Title | Use after free in display |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20781 |
|---|---|
| Title | Double free in display |
| Severity | Medium |
| CWE | CWE-415 Double Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20782 |
|---|---|
| Title | Out-of-bounds write in display |
| Severity | Medium |
| CWE | CWE-787 Out-of-bounds Write |
| Description | There is a possible out of bounds write due to a missing bounds check. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20783 |
|---|---|
| Title | Out-of-bounds write in display |
| Severity | Medium |
| CWE | CWE-787 Out-of-bounds Write |
| Description | There is a possible out of bounds write due to a missing bounds check. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20784 |
|---|---|
| Title | Use of uninitialized variable in display |
| Severity | Medium |
| CWE | CWE-457 Use of Uninitialized Variable |
| Description | There is a possible memory corruption due to uninitialized data. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20785 |
|---|---|
| Title | Use after free in display |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20786 |
|---|---|
| Title | Double free in display |
| Severity | Medium |
| CWE | CWE-415 Double Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873, MT8883 |
| Report Source | External |
| CVE | CVE-2025-20787 |
|---|---|
| Title | Use after free in display |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT2718, MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT8196, MT8676, MT8678, MT8796 |
| Report Source | External |
| CVE | CVE-2025-20803 |
|---|---|
| Title | Integer overflow in dpe |
| Severity | Medium |
| CWE | CWE-190 Integer Overflow |
| Description | There is a possible memory corruption due to an integer overflow. |
| Affected Chipsets | MT6899, MT6991, MT8793 |
| Report Source | External |
| CVE | CVE-2025-20804 |
|---|---|
| Title | Use after free in dpe |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6899, MT6991 |
| Report Source | External |
| CVE | CVE-2025-20805 |
|---|---|
| Title | Use after free in dpe |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6899, MT6991, MT8793 |
| Report Source | External |
| CVE | CVE-2025-20806 |
|---|---|
| Title | Use after free in dpe |
| Severity | Medium |
| CWE | CWE-416 Use After Free |
| Description | There is a possible memory corruption due to use after free. |
| Affected Chipsets | MT6899, MT6991, MT8793 |
| Report Source | External |
| CVE | CVE-2025-20807 |
|---|---|
| Title | Integer overflow in dpe |
| Severity | Medium |
| CWE | CWE-190 Integer Overflow |
| Description | There is a possible out of bounds write due to an integer overflow. |
| Affected Chipsets | MT6899, MT6991, MT8793 |
| Report Source | External |
Versions
| Version | Date | Description |
| 1.0 | January 5, 2026 | Bulletin published. |
Notes
Information above is generated only at the time of creation of this Security Bulletin. The list of affected chipsets could be not complete. For any further information, device OEMs can reach your MediaTek contact person if needed.
If you want to report a security vulnerability in MediaTek chipsets or products, please go to Report Security Vulnerability page on MediaTek website.
If you want to report a security vulnerability in MediaTek chipsets or products, please go to Report Security Vulnerability page on MediaTek website.